Reams Biological Theory of Ionization (RBTI) is a 7 part advanced method of testing your pH. Saliva is 1 part of this test; Your urine then goes through a six part analysis incorporating nitrate nitrogen and ammonia nitrogen. This is a very detailed and dynamic look into your body that provides a wealth of information. Your urine is collected 2 hours after eating. The analysis reveals numbers that are put into calculation form. This calculation then reveal the condition of your inner terrain. This calculation displays digestive abilities, elimination efficiencies, salt levels in relationship to osmotic pressure present and areas which correlates to your liver and kidney function.